#include<bits/stdc++.h>
using namespace std;
#define int long long
#define debug(x) cerr<<"$"<<#x<<"="<<x<<"\n"
signed main(){
    freopen("arena.in","r",stdin);
    freopen("arena.out","w",stdout);
    ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);

    return 0;
}
